2006 Audi S4 vs. 2008 BMW 540
To start off, 2008 BMW 540 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Audi S4. In addition, the cost of maintenance, including insurance, on 2006 Audi S4 would be higher. At 4,398 cc, 2008 BMW 540 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 540 weights approximately 205 kg more than 2006 Audi S4.
Because 2006 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW 540. In wet, icy, snow, or gravel driving conditions, 2006 Audi S4 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 BMW 540 (440 Nm @ 3600 RPM) has 30 more torque (in Nm) than 2006 Audi S4. (410 Nm @ 3500 RPM). This means 2008 BMW 540 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi S4.
Compare all specifications:
| 2006 Audi S4 | 2008 BMW 540 | |
| Make | Audi | BMW |
| Model | S4 | 540 |
| Year Released | 2006 | 2008 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4398 cc |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 0 HP |
| Torque | 410 Nm | 440 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 6.2 seconds |
| Drive Type | 4WD | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1530 kg | 1735 kg |
| Vehicle Length | 4580 mm | 5050 mm |
| Vehicle Height | 1400 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
| Fuel Consumption Overall | 13.2 L/100km | 12.5 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
